The Multi-Media Abraser provides a reproducible method to measure the
abrasivity of various mediums. Using this instrument, you can determine the
relative abrasiveness of fluids, powders, pastes and semi-solids. Or,
characterize how these mediums cause wear when they come in contact with
different components.

Description

The TABER® Multi-Media Abraser is available as a separate
attachment or pre-mounted on a single or dual Taber Abraser.

The medium to be tested is placed in a specimen-testing dish that contains a
stainless steel wear disc. As the dish rotates, an integral drive shaft operates
a set of gears and turns the spline shaft. At the base of the shaft is a pin
holder with three (3) hi-grade brass pins that rotate in the opposite direction
of the specimen dish. As the powder, fluid or semi-solid flows between the brass
pins and stainless steel, the material acts as an abrasive and causes wear.
Measuring the weight loss of the brass pins provides an accurate comparison of
abrasion rates of different media.

To test a wide range of material viscosities, both load and pin holder speed
are adjustable. The standard testing load on the brass pins can be varied from
250g to 1,000g (in 250g increments). Optional weight discs can bring the maximum
load to 2,500g. The speed of the specimen-testing dish is dependent on the model
Taber Abraser that is being used - either 60 rpm with 230V models or 72 rpm with
115V models. By changing the gearing, the speed of the pin holder can be
altered.

Color Code

Gear Set-up

Drive : Driven Ratio

Pin Holder
RPM (115V)

Pin Holder
RPM (230V)

Orange

Standard

0.9 : 1

65

54

Yellow

Reversed

1 : 0.9

80

67

Red (optional)

Standard

0.6 : 1

42

35

Green (optional)

Reversed

1 : 1.7

123

103

Using the template provided, custom pins or wear discs can also be
fabricated. Substituting materials in your specific application will help you to
understand the wear characteristics.